Lawn-mower.



No. 687,587. Patented Nov. 26, |90I. H. E. L. -F. STEWART.

yLAWN MOWER.

(Application med Nov. 24, 1900.)

@lo Model.) 2 Sheets-Sheet l.

Patented' Nov. 26, |901.

H. E. & L. F. STEWART.

LAwN MowE. (Applicaeidn med Nav. 24, 1900.)

2 Shets-Sheet 2.

(No Model.)

Tn: Norms Pnzns C0, Mofo-urna. wAsHmcmu. u. c,

Y UNITED ASTATES PATENT OEErCE.

HENRY E. STEWART AND LUTHER F. STEWART, OF STEPHENVILLE, TEXAS.

LAWN-MOWER.

SPECIFICATION forming part of Letters Patent No. 687,587, dated November26, 1901. Application nea Non-,mba 24,1900. serian. 37,621. or@maat-,1.)

.To all whom it may concern: i

Be it known that we, HENRY E. STEWAR and LUTHER F. STEWART, citizens ofthe United States, residing at Stephenville, in the county of Erath andState of Texas, have invented and produced a new and originalImprovement in Lawn-Mowers; and we do hereby declare the following to bea full, clear, and exact description of the same, reference being had tothe accompanying drawings, forming a part thereof.

Our invention is a lawn-mower and it consists in the novel constructionand arrangement of its parts. In the accompanying drawings, Figure 1 isa perspective view of our invention. Fig. 2 is a top plan view of ourinvention with the driving machinery in horizontal section. Fig. 3Vis'asectional view of the drive-wheels, of the pinion, bevel gear-wheel,double protection-box, axle-cover, bearings,and protectionplates. Figs,4 and 5 are detailed views.

1 represents the drive-Wheels. These drivewheels contain cogs 2 aroundon the inner faces of their inner flanges 3. On the periphery of thesedrive-wheels are elevations 4 to sink in the ground, and thus keep thewheels from slipping on the surface ofthe ground. `Each one of thesedrive-wheels is provided with flanges V3 land 3', leaving between them agroove 6. The mouths of these grooves 6A open from the inner faces ofthe wheels. V5 represents circular plates concentric with saiddrive-wheels and work against the inner faces of the same, and each isprovided with a Bange 7, that fits in the groove 6. The object of theseplates 5, grooves 6, and flanges 7 is to protect the cogs from dirt,grass, trash, and the like. Secured to the inner faces of these circularplatesand some little distance from their centers are bearings 8, andjournaled in these bearings is a gear-axle 9, and journaledoon each endof this axle and beyond the plates. are cog-wheels 10, (see Fig. 2,)which mesh with cogs 2 of the drivewheels. On this gear-axle andworkingin the bearings 8 are ratchet-wheels and ratchets 11.l Rigidly securedon said gear-axle and near one end is a gear-wheel 12.

a cylindrical cover 15, one end of which cover is secured to or may beintegral with the inner face of one of the circular plates 5, the otherend widening and forming one-half of a double box 18 19, and the otherend of said bearing-axle is protected by a cylindrical cover 15', oneend of which cover is secured to or may be integral with the inner faceof the other circular plate 5, the other end of said cover widening andforming one-half of the double box 18 19. Revolving on said bearing-axle13 is a small cog-wheel 16, which meshes with the cog-wheel 12, abovementioned, and rigidly secured on said gear-axle 9. Revolving on saidbearing-axle 13 is also a bevel cog-wheel 17, rigidly secured to saidcog-wheel 16, the said cog-wheel 'l2 working in box 19 and meshing withcog-wheel 16, working in the box 18. Extending from the front part ofbox 18 isa hollow arm 20, provided with bearings 21, and working in this1 hollow arm 2O and bearings 21 is ashaft 22, having on its rear end abevel cog-wheel 23, meshing with the bevel cog-wheel 17, revolving onbearing-axle 13.

- Atl the front end of the hollowarm 2O is a stroke-box 23. Centrallyand perpendicularly secured to the forward end of the shaft 22 andworking in the stroke-box 23 is a Wheel 24, and to the front face ofthis wheel 24 is eccentrically secured a pin 25, covered by afriction-roller 36. In the bottom Wall of the stroke-box 23 is alongitudinal slot 26, and working. in said stroke-box is a stroke-block27, its lower end working down through said slot, said block havinginits rear face a verthe front end of the hollow arm 2O is a plate 31,which may be integral with the said arm or secured thereto, said plateforming the rear wall of the stroke-box 23, and extending from the loweredge of said plate V31 are elbow-arms 32, and to these elbow-arms issecured a guard-bar 33, in which works a sickle 311, the teeth 35 ofwhich are V-shap'ed. Removably secured in the guard-bar 33 is a steelblade 40, provided with teeth 41, the edges of which for part of theirlength having notches or corrugations 42 on their sides to catch thestiif grass and keep it from slipping as the teeth in the sickle-bladeplay back and forth in the guard-bar Y This plate 40 is removable andmay be removed to be sharpened or for any other purpose. One end of thesickle=blade 34 is secured to the lower end of the strokeblock 27.4 Theguard-fingers 33 may extend in front of the stroke-box, as shown inFigs. 1 and 2, or may stop short at the end of the same, as shown inFig. 4.

Extending from the lower face of the hollow arm 20 is a slotted arm 37,and in the bi` furcated end of said slotted arm is adj ustably secured aroller 38 to regulate the height of the guard-bar, and secured to thecircular plates 5 is a handle 39.

The operation of this invention is too manifest to need furtherdescription.

Having described our invention, what we claim as new, and desire tosecure by Letters Patent, is

1. The combination of a bearing-axle 13; drive-wheels 1, journaled onsaid axle, provided with inwardly-extending flanges 3, and 3'; cogs 2,extending inwardly from the inner faces of the inner iianges; circulargrooves 6, near the periphery of said drive-Wheels, and beyond the cogs2; circular plates 5, concentric with said drive-wheels, and workingagainst the inner faces thereof, and having flanges 7, working in saidgrooves 6; bearings 8, secured to said circular plates, a littledistance from their centers; a gear-axle 9, journaled in said bearings;cog-wheels 10, one journaled on each end of said gear-axle, and meshingwith the cogs 2, of the drive-Wheels; ratchets and ratchet-wheels 11,working in said bearings S; cog-wheel12, rigidly secured near one end ofsaid gear-axle; cylindrical covers 15, and 15', surrounding saidbearingaxle 13, their outer ends secured to said circular plates, andtheir inner ends enlarging into a `double box 18, and 19; a pinioncogwheel 16, revolving on said bearing-axle 13, and meshing with saidcog-Wheel12; bevel gear-wheel 17, secured to said Wheel 16, and alsorevolving on said bearing axle, said wheels 12, 16, and 17, working inthe said double box; a hollow arm 20, extending from the forward part ofsaid box; a shaft 22, revolving in said hollow arm, and having on itsrear end a bevel cog-wheel 23, meshing with bevel cog-wheel 17, on thebearing-axle said mechanism adapted to operate a sickleblade,substantially as shown and described and for the purposes set forth.

2. The combination of a bearing-axle; drive` wheels journaled on saidaxle, and provided with internally-extending anges, leaving between thema circular groove cogs extending inwardly from the inner faces of theinner fianges of said wheels; circular plates 5, concentric with saiddrive-wheels, each having a ange, working in the grooves of said drive-Wheels; bearings secured to said circular plates, a little distance fromtheir centers; a gearing axle journaled in said bearings; ratchets andratchet-wheels working in said bearings; a cog-wheel journaled on eachend of said gearing-axle, and meshing with the cogs of the drive-wheels;a cog-Wheel rigidly secured on said axle near one end; a cylindricalcover, surrounding part of the bear-v ing-axle, and having one endsecured to one of the cylindrical plates, its other end enlarging andforming one half of a double box; a cylindrical cover, covering theother part of said bearing-axle, and having one end secured to one ofthe circular plates, and its other en larging and forming the other halfof the double box; a double box consisting of the two last-mentionedenlargements, and cover ingthe central gearing-wheels; a pinion cog-Wheel 16, working in said box, and revolving on the bearing-axle, andmeshing with the last-mentioned wheel; a bevel gear-wheel'se-i cured tosaid pinion-wheel, and also working in' said double box, and revolvingon said bearing-axle; a hollow arrn extending from the forward part ofsaid double box; a shaft adapted to revolve in said hollow arm, andhaving on its rear end a bevel cog-wheel, meshing with saidlast-mentioned bevel cogwheel, andhaving secured centrally andperpendicularly on its front end a wheel; a pin secured eccentrically insaid wheel, protected by a friction-roller; a guard-bar secured to thefront end of said hollow arm; a toothed and corrugated blade removablysecured in said Q guard bar; a sickle working in said guard-bar; saidsickle adapted to be operated by the mechanism above described,substantially as shown and described and for the pur= poses set forth.

3. In a lawn-mower, substantially as shown and described,y a hollow armextending forwardly from the double box; a shaft revolving in saidhollow arm, and having on one end a bevel cog-wheel adapted to beoperated by a bevel cog-wheel of the machine; aplate centrally andperpendicularly secured to the front end of said hollow arm; elbow-armssecured to said plate; a guard-bar secured to said elbow-arms; astroke-box secured to the front face of said plate, and having in itslower wall a horizontal slot; a rod passing horizontally through saidbox, and working in bearings; a stroke-block situated in said box andrigidly secured to said rod, and having in its rear face, a Verticalslot, its lower end extending down through the slot in the box; asickle-bar secured to the lower end of said stroke-block; a Wheelcentrally and perpendeularly secured to the front end of the said shaft,and working in said box; a pin eecentrically secured to the front faceof said wheel, and Working in the slot of the strokeblock, substantiallyas shown and described and for the purposes set forth.

In testimony whereof we ax our signa. tures in presence of twowitnesses.

HENRY E. STEWART. LUTHER F. STEWART.

